Chlorine Scrubber meets Uniform Fire Code requirements.

Press Release Summary:

Featuring room exhaust rate of 3,000 cfm, EST(TM) Type DES 3000 Dry Emergency Chlorine Scrubber offers safe and low maintenance mitigation of accidental chlorine gas releases in municipal and industrial applications. It includes 1 fan and type STS dry pellet media that is landfill disposable and non-hazardous in fresh and spent forms. Able to operating at sub-zero temperatures without use of heaters, dry scrubbing unit does not require liquid chemical leak containment.

Original Press Release:

New Severn Trent Services Standardized Dry Chlorine Emergency Scrubber Features Lower Maintenance and Operating Costs than Traditional Wet Scrubbers

EST(TM) Dry Emergency Scrubber, Type DES 3000 provides safe, user-friendly and low-maintenance mitigation of accidental chlorine gas releases in municipal and industrial applications.

FORT WASHINGTON, Pa. - June 8, 2007 - Severn Trent Services has introduced the EST(TM) Dry Emergency Chlorine Scrubber, Type DES 3000, a standardized, one-ton system designed to mitigate accidental chlorine gas releases in municipal and industrial applications in accordance with Uniform Fire Code requirements. The EST Type DES 3000 provides a safe, user-friendly and low-maintenance alternative to wet scrubbers and features lower long-term maintenance and operating costs than traditional wet scrubber systems.

The EST Type DES 3000 is pre-engineered and available for shipment in eight to 10 weeks. A variety of custom configurations also are available.

The Type DES 3000 has a room exhaust rate of 3,000 cubic feet per minute (CFM) and boasts only one moving part, the fan. The Type STS dry pellet media used in the EST Type DES 3000 system is landfill disposable and non-hazardous in the fresh and spent forms. If not exposed to chlorine, the Type STS media has an indefinite life expectancy. As a result, dry media replacement and disposal costs over a 20-year operational period, assuming complete media exhaustion, are as low as half of the cost for caustic solution used in wet scrubbers.

Dry chlorine scrubbers do not require liquid chemical leak containment or double wall vessel construction and they operate at sub-zero temperatures without the use of heaters.

About Severn Trent Services

Severn Trent Services (, with global headquarters in Fort Washington, Pa., is a leading supplier of water and wastewater treatment solutions. The company's broad range of products and services is concentrated around disinfection, instrumentation and filtration technologies, contract operating services and state-of-the-art residential metering products and services. Our analytical services group is the United Kingdom's leading environmental testing organization, and our international management services business provides support in all aspects of water and wastewater utility operational development and business transformation. Severn Trent Services is a member of the Severn Trent Plc (London: SVT.L) group of companies. Severn Trent is a FTSE 100 company.

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